Metastability of multi-lamellar vesicles in a nonionic system

Nuclear magnetic resonance spectroscopy and rheological analysis have been used to investigate the stability of mechanically induced tri-ethylene-glycol-mono-n-decyl-ether (C(10)E(3))/deuterium oxide (D(2)O) multi-lamellar vesicles (MLVs) and the transition from MLVs to planar lamellae. It was found...

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Bibliographic Details
Main Author: Filippelli, L. (author)
Other Authors: Medronho, B. (author), Rossi, C. O. (author), Miguel, M. G. (author), Olsson, U. (author)
Format: article
Language:eng
Published: 2015
Online Access:http://hdl.handle.net/10400.1/7272
Country:Portugal
Oai:oai:sapientia.ualg.pt:10400.1/7272
Description
Summary:Nuclear magnetic resonance spectroscopy and rheological analysis have been used to investigate the stability of mechanically induced tri-ethylene-glycol-mono-n-decyl-ether (C(10)E(3))/deuterium oxide (D(2)O) multi-lamellar vesicles (MLVs) and the transition from MLVs to planar lamellae. It was found that MLVs prepared by vortex stirring, relax back to the lamellar phase in a few hours while the relaxation of the shear induced MLVs takes days. Pulsed gradient spin echo and water self-diffusion coefficient experiments, revealed that the MLVs texture, obtained by vortex stirring, is composed of large size structures. These data indicate that the kinetics of lamellar re-formation depend on the MLVs number density.